JP2022103106A - Cleansing composition - Google Patents

Abstract

To provide a cleansing composition that has a bicontinuous structure and is excellent in use feeling (moist feeling), washability, and high-temperature stability.SOLUTION: A cleansing composition having a bicontinuous structure, contains following components: (A) polyoxyethylene glyceryl isostearate; (B) polyoxyethylene (caprylate/caprate) glycerides; (C) liquid oil; (D) an alcohol having a valence of three or more; (E) a divalent alcohol; and (F) water, the content of the component (D) being 20 mass% or more.SELECTED DRAWING: None

Description

The present invention relates to cleansing compositions.

There are two types of cleansing cosmetics: oil-based ones that remove makeup cosmetics such as foundation and lip color, and water-based ones that remove stains such as sebum. Oil-based cleansing cosmetics blend well with oil-based stains such as foundation, lipstick, mascara, and eye shadow that remain on the skin, and while they can effectively remove them, they are sticky and slimy even when wiped off after use. There is a drawback that it remains, and in some cases, it needs to be further washed with soap or the like, which is troublesome. On the other hand, the water-based cleansing cosmetic has a good refreshing feeling, but has a drawback that it has a poor effect of removing stains.

In recent years, cleansing cosmetics having a bi-continuous structure have been proposed for such problems (for example, Patent Documents 1 to 4). In cleansing cosmetics having a bicontinuous structure, an oil phase composed of an oily component and an aqueous phase composed of an aqueous component both form a continuous phase. As a result, it blends well with oily stains caused by makeup cosmetics, etc., and also with water and hot water. Therefore, apply it to the skin to blend it with stains such as makeup cosmetics, and then wash it off with water or hot water. By doing so, it is said that the dirt can be effectively removed.

Japanese Unexamined Patent Publication No. 2019-147765 Japanese Unexamined Patent Publication No. 2017-178930 Japanese Unexamined Patent Publication No. 2017-066085 Japanese Unexamined Patent Publication No. 2018-172362

However, in the case of cleansing compositions as in Patent Documents 1 to 4, there are restrictions on the composition of ingredients for forming a bi-continuous structure with a transparent appearance, and while ensuring a feeling of use (moist feeling) and detergency. There was a problem that it was not easy to achieve stability at high temperatures. Specifically, for example, in Patent Document 1, it is said that by blending an alcohol having a trivalent or higher value, a moist feeling is given to the skin after washing after use, and the usability is improved. There was room for improvement in usability, formation of bi-continuous structure, and stability at high temperature, such as the inability to form a bi-continuous structure when 20% by mass or more of the alcohol was added.

The present invention has been made in view of the above circumstances, and has a cleansing composition having a transparent appearance and a bi-continuous structure, and having excellent usability (moist feeling), detergency, and stability at high temperatures. The challenge is to provide things.

The present invention is characterized by the following in order to solve the above problems.

A cleansing composition having a bicontinuous structure,
The following ingredients:
(A) Polyoxyethylene glyceryl isostearate;
(B) (Caprylic acid / capric acid) polyoxyethylene glyceriz;
(C) Liquid oil;
(D) Alcohol of trivalent or higher;
It contains (E) divalent alcohol; and (F) water, and the content of the component (D) is 20% by mass or more.

The cleansing composition of the present invention has a transparent appearance without separation and cloudiness, has a bi-continuous structure, and is excellent in usability (moist feeling), detergency, and stability at high temperatures.

Hereinafter, an embodiment of the cleansing composition of the present invention will be described.

The cleansing composition of the present invention has a bicontinuous structure and has a bicontinuous structure.
The following ingredients:
(A) Polyoxyethylene glyceryl isostearate;
(B) (Caprylic acid / capric acid) polyoxyethylene glyceriz;
(C) Liquid oil;
(D) Alcohol of trivalent or higher;
(E) Divalent alcohol; and (F) Water.

Here, the "bi-continuous structure" is a microemulsion in which both the oil layer and the aqueous layer are continuous phases, and is optically isotropic transparent or translucent.

Further, by observing with an electron microscope by the freeze-cutting replica method, it is possible to obtain an image in which the aqueous phase and the oil phase form a continuous phase. Specifically, a structure in which a rounded portion and a slightly flat portion are entwined in a mesh pattern, or a layered structure in which a disorderly sequence is connected can be seen. From this observation, it can be confirmed that only the aqueous phase or the oil phase is not a microemulsion forming a continuous phase.

Further, as the simplest confirmation method of having a bicontinuous structure, a liquid in which a water-soluble dye is dissolved in water and an oil-soluble dye by utilizing the fact that the aqueous phase and the oil phase form a continuous phase are used. Can be confirmed from the colored state of the composition by dropping the liquid dissolved in oil onto the static composition. Infiltration of the water-soluble dye solution is observed when the aqueous phase forms a continuous phase. When the oil phase forms a continuous phase, infiltration of the oil-soluble dye solution is observed. In the composition having a bicontinuous structure, both the infiltration of the water-soluble dye solution and the infiltration of the oil-soluble dye solution are observed.

By having a bi-continuous structure, the cleansing composition of the present invention has excellent detergency for oily stains (lipstick, mascara, etc.), and since the aqueous layer is a continuous phase, after rinsing with water or hot water. It is also excellent in usability because it suppresses sliminess and stickiness after use.

The polyoxyethylene glyceryl isostearate of the component (A) is a monoester type, and specifically, for example, PEG-5 glyceryl isostearate, PEG-8 glyceryl isostearate, PEG-10 glyceryl isostearate, PEG isostearate. -15 glyceryl, PEG-20 glyceryl isostearate, PEG-25 glyceryl isostearate, PEG-30 glyceryl isostearate, PEG-40 glyceryl isostearate, PEG-50 glyceryl isostearate, PEG-60 glyceryl isostearate, PEG-isopropyl isostearate One or more of 80 glyceryl and the like can be exemplified.

The number of moles of ethylene oxide added to the component (A) is not particularly limited, and for example, the range of 1 to 80 moles can be exemplified, such as detergency, formation of a bicontinuous structure, transparency of the composition, and the like. From the viewpoint of the above, the number of moles of ethylene oxide added is preferably 5 to 30 mol.

In addition, the component (A) is
(A1) Polyoxyethylene glyceryl isostearate having an addition molar number of 1 to 10 moles of ethylene oxide, and
(A2) It is preferable to use polyoxyethylene glyceryl isostearate having an addition mole number of 11 to 80 moles of ethylene oxide in combination. By using the above (a1) and (a2) in combination as the component (A), the stability of the composition at high and low temperatures can be enhanced. In this case, it is preferable to use (a1) 5 to 10 mol and (a2) 15 to 30 mol. The mass ratio ((a1) / (a2)) is more preferably 1 to 13, and even more preferably 8 to 12.

Further, the combination when (a1) and (a2) are used in combination is not particularly limited, but for example, PEG-8 glyceryl isostearate as (a1) and PEG-20 glyceryl isostearate as (a2) may be used in combination. Is more preferable.

The blending amount of the component (A) with respect to the composition can be exemplified in the range of 1 to 30% by mass, and is 2 to 26 from the viewpoint of appearance, detergency, and formation of a bicontinuous structure of the cleansing composition. It is preferably by mass%, and more preferably 18 to 26% by mass from the viewpoint of enhancing stability at high and low temperatures.

The (caprylic acid / capric acid) polyoxyethylene glyceriz of the component (B) is a monoester type, and specifically, for example, (caprylic acid / capric acid) PEG-4 glyceriz, (caprylic acid / capric acid). ) PEG-6 glyceriz, (caprylic acid / capric acid) PEG-7 glyceriz, (caprylic acid / caprylic acid) PEG-8 glyceriz, (caprylic acid / capric acid) PEG-15 glyceriz, (caprylic acid / capric acid) PEG -20 One or more of glycerides and the like can be exemplified.

The number of moles of ethylene oxide added to the component (B) is not particularly limited, and for example, the range of 4 to 20 moles can be exemplified, but the number of moles of ethylene oxide added is limited from the viewpoint of forming a bicontinuous structure. It is preferably 6-8 mol (caprylic acid / capric acid) PEG-6 glyceriz, (caprylic acid / capric acid) PEG-7 glyceriz, (caprylic acid / capric acid) PEG-8 glyceriz.

The blending amount of the component (B) with respect to the composition is not particularly limited, but can be exemplified in the range of 2 to 20% by mass, for example, from the viewpoint of appearance, detergency, and formation of bicontinuous structure of the cleansing composition. Therefore, it is preferably 4 to 18% by mass.

The liquid oil of the component (C) refers to a liquid at room temperature (5 to 35 ° C.), and when two or more kinds are mixed and used, the properties of the mixture may be liquid, and oily stains are dissolved and washed. From the viewpoint of the above, a liquid at 25 ° C. is preferable.

The liquid oil is not particularly limited as long as it can be blended in the cleansing composition, and is, for example, one or two of animal and vegetable oils, ester oils, silicone oils, hydrocarbon oils, waxes, higher alcohols, higher fatty acids and the like. More than a species can be exemplified.

The animal and vegetable oils are not particularly limited, but are, for example, lard, fish oil, squalane, macadamia nut oil, eucalyptus oil, palm oil, avocado oil, safflower oil, olive oil, palm oil, palm kernel oil, kukui nut oil, and shea butter. Avatar), cacao butter, almond oil, sunflower oil, rose hip oil, olive squalane, camellia oil, kiwi fruit seed oil, camellia oil, apricot oil, sesame oil, soybean oil, jojoba oil, sunflower oil, hazelnut oil, meadowfoam oil. , Hakka oil, argan oil, carrot oil, lavender oil, sugar squalane, damask rose flower wax, centifolia rose flower wax, sokei flower wax, camellia oil, these hydrogenated additives (eg hydrogenated castor oil, hydrogenated jojoba oil) , Hydrogenated palm oil, hydrogenated avocado oil, hydrogenated soybean oil, etc.), or two or more thereof can be exemplified.

Examples of the ester oil include esters of fatty acids having 1 to 22 carbon atoms and alcohols having 1 to 22 carbon atoms, and are not particularly limited. For example, ethyl oleate, 2-ethylhexyl oleate, butyl oleate, and decyl oleate. , Cetyl oleate, ethyl olive oil fatty acid, 2-ethylhexyl olive oil fatty acid, decyl olive oil fatty acid, isopropyl myristate, isopropyl palmitate, myristyl myristate, ethyl palmitate, isopropyl palmitate, cetyl palmitate, 2-ethylhexyl palmitate, myristin Octyldodecyl acid, isostearyl isostearate, ethyl isostearate, 2-ethylhexyl isostearate, isopropyl isostearate, isobutyl isostearate, isosetyl isostearate, decyl isostearate, propylene glycol isostearate, cetyl 2-ethylhexarate, tri2- Glyceryl ethylhexanate, tri (caprylic acid / capric acid) glyceryl, glyceryl triisostearate, isononyl isononanoate, diisopropyl adipate, pentaerythrityl tetraoctanoate, pentaerythrit tetraisostearate, diisostearyl malate, triethylhexane Erythrityl acid, 2-ethylhexyl hydroxystearate, hexa (hydroxystearic acid / stearic acid / logonic acid) dipentaerythrityl, tetra (hydroxystearic acid / isostearic acid) dipentaerythrityl, dipentaerythrityl hexahydroxystearate, (ethylhexanoic acid / stearic acid / adipine) Examples of one or more of glyceryl, tri (capric acid / capric acid / myristic acid / stearic acid) glyceryl, hexa (bechenic acid / benzoic acid / ethylhexanoic acid) dipentaerythrityl, alkyl benzoate and the like. be able to.

The silicone oil is not particularly limited, but for example, dimethyl silicone oil such as methyl polysiloxane and highly polymerized methyl polysiloxane; methyl phenyl silicone oil such as methyl phenyl polysiloxane; methyl cyclopolysiloxane, octamethyl cyclotetrasiloxane, and deca. Cyclic silicone oils such as methylcyclopentasiloxane and dodecamethylcyclohexasiloxane; aminopropylmethylsiloxane / dimethylsiloxane copolymer, aminoethylaminopropylsiloxane / dimethylsiloxane copolymer, aminoethylaminopropylmethylsiloxane / dimethylsiloxane copolymer weight Amino-modified silicones such as coalesced, carboxy-modified silicones, fatty acid-modified silicones, alcohol-modified silicones, aliphatic alcohol-modified silicones, epoxy-modified silicones, fluorine-modified silicones, alkyl-modified silicones and other modified silicones; One or more of them can be exemplified.

Examples of the hydrocarbon oil include liquid paraffin, liquid isoparaffin, mineral oil, isododecane, α-olefin oligomer, petrolatum, isoparaffin, light isoparaffin, light liquid isoparaffin, squalane, synthetic squalane, vegetable squalane, hydrogenated polyisobutene, and hydrogenated. One or more of (tetradecenyl / methylpentadecene) and the like can be exemplified.

The wax is not particularly limited, and examples thereof include one or more of carnauba wax, candelilla wax, beeswax, rice bran, cellac wax, whale wax, lanolin, sunflower seed wax and the like.

Examples of the higher alcohol include fatty alcohols having 12 to 24 carbon atoms, which are difficult to dissolve in water, and are not particularly limited. For example, lauryl alcohol, myristyl alcohol, cetyl alcohol (cetanol), stearyl alcohol, cetearyl alcohol, and iso. One or more of stearyl alcohol, hexyldecanol, 2-octyldodecanol, oleyl alcohol, decyltetradecanol, behenyl alcohol and the like can be exemplified.

Examples of the higher fatty acid include fatty acids having 12 to 24 carbon atoms that are difficult to dissolve in water, and are not particularly limited, such as lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, oleic acid, and behenic acid. One or more of them can be exemplified.

As the liquid oil of the component (C), it is preferable to use an ester oil or a hydrocarbon oil from the viewpoint of stability at high and low temperatures, and among the ester oils, 2-ethylhexyl palmitate and cetyl 2-ethylhexanate are used. Among the hydrocarbon oils, liquid paraffin and isododecane are more preferable. In particular, it is preferable to use an ester oil and a hydrocarbon oil in combination, and it is more preferable to use 2-ethylhexyl palmitate or cetyl 2-ethylhexanoate in combination with liquid paraffin or isododecane, and to flow with cetyl 2-ethylhexanoate. It is more preferable to use it in combination with paraffin. This can improve detergency and stability at high and low temperatures.

The blending amount of the component (C) with respect to the composition is not particularly limited and depends on the blending amount of water of the components (A), (B) and the component (F), but for example, the range of 5 to 25% by mass is exemplified. From the viewpoint of detergency, it is preferably 10 to 20% by mass, and more preferably 15 to 20% by mass. When an ester oil and a hydrocarbon oil are used in combination as the liquid oil of the component (C), the mass ratio (ester oil / hydrocarbon oil) is preferably 0.1 to 7.

The alcohol having a trivalent or higher valence of the component (D) is not particularly limited, and for example, glycerins such as glycerin and diglycerin; Sugars: One or more of glucose derivatives such as methyl glucoside and ethyl glucoside can be exemplified. Among these, glycerin is preferable because it can give an appropriate moist feeling, is liquid at room temperature, and has good operability.

The blending amount of the component (D) with respect to the composition is 20% by mass or more, whereby the cleansing composition is excellent in a feeling of use, for example, a moist feeling of the skin after use. The blending amount of the component (D) with respect to the composition is preferably 20 to 40% by mass, preferably 20 to 30% by mass, from the viewpoint of forming a bicontinuous structure, appearance of the composition, and stability. More preferred.

The dihydric alcohol of the component (E) is not particularly limited, and for example, dipropylene glycol, 1,3-propylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, 1,2-pentylene glycol, and the like. Examples thereof include 1,2-hexylene glycol and the like. Among these, 1,3-butylene glycol is preferable.

Further, the blending amount of the component (E) with respect to the composition is not particularly limited, but for example, a range of 1 to 30% by mass can be exemplified, and a range of 1 to 10% by mass is preferable.

The water of the component (F) may be any water that can be used for cosmetics, and is not particularly limited. For example, purified water, ion-exchanged water, distilled water, natural water, deep ocean water, hydrogen water, RO water, and sterilization. Treated water, normal water and the like can be exemplified.

Further, in the cleansing composition of the present invention, a nonionic surfactant (component (G)) other than the components (A) and (B) can be blended. By blending the component (G), detergency and stability at high and low temperatures can be improved.

Specifically, the component (G) is not particularly limited, and for example, trifatty acid polyoxyethylene glyceryl, coconut oil fatty acid polyoxyethylene glyceryl, and the like can be preferably exemplified.

As the trifatty acid polyoxyethylene glyceryl, polyoxyethylene glyceryl triisostearate is particularly preferable, and specifically, PEG-5 glyceryl triisostearate, PEG-10 glyceryl triisostearate, PEG-15 glyceryl triisostearate, and tri. Examples thereof include PEG-20 glyceryl isostearate and PEG-30 glyceryl triisostearate.

The coconut oil fatty acid polyoxyethylene glyceryl is a monoester type, and specific examples thereof include coconut oil fatty acid PEG-3 glyceryl, coconut oil fatty acid PEG-7 glyceryl, and coconut oil fatty acid PEG-30 glyceryl. ..

Among these, the component (G) is more preferably PEG-20 glyceryl triisostearate, PEG-7 glyceryl coconut oil fatty acid, or the like.

When the component (G) is not blended in the cleansing composition, the mass ratio of the component (C) to the total of the component (A) and the component (B) (component (C) / (component (component)) from the viewpoint of cleanability. The A) + component (B)) is preferably 0.1 to 0.8, more preferably 0.3 to 0.8.

On the other hand, when the component (G) is blended, the mass ratio of the component (C) to the total of the component (A), the component (B) and the component (G) (component (C) / (component)) from the viewpoint of cleanability. (A) + component (B) + component (G)) is preferably 0.1 to 0.8, more preferably 0.3 to 0.8.

In addition to the ingredients (A) to (G), the cleansing composition of the present invention may appropriately contain ingredients usually used in cleansing cosmetics. Specifically, for example, thickeners such as anionic surfactants, cationic surfactants, amphoteric surfactants, viscous minerals, and water-soluble polysaccharides, inorganic pigments, bactericides, moisturizers, wetting agents, and coloring agents. Agents, preservatives, feel improvers, fragrances, anti-inflammatory agents, whitening agents, antiperspirants, UV absorbers, antioxidants, various extracts and the like can be blended.

The method for producing the cleansing composition of the present invention is not particularly limited, but for example, a mixture of the components (A) to (C) and the component (G) and a mixture of the components (D) to (F) are mixed. It can be manufactured by stirring.

The cleansing composition of the present invention has a bicontinuous structure and has a bicontinuous structure.
The following ingredients:
(A) Polyoxyethylene glyceryl isostearate;
(B) (Caprylic acid / capric acid) polyoxyethylene glyceriz;
(C) Liquid oil;
(D) Alcohol of trivalent or higher;
It contains (E) divalent alcohol; and (F) water, and the content of the component (D) is 20% by mass or more. Therefore, the cleansing composition of the present invention has a transparent appearance, and is excellent in usability (moist feeling), detergency, and stability at high temperatures.

Further, for example, cleaning is performed by blending the component (G), using (a1) and (a2) as the component (A), and using the ester oil and the hydrocarbon oil as the component (C). It can improve the properties, stability at high temperature and low temperature.

In terms of stability at low temperatures, for example, when the cleansing composition of the present invention is stored at -5 ° C, it may freeze depending on the ratio of each component, but after returning to room temperature, it is stirred to give a transparent appearance. Even when it is returned and stored at a low temperature, it can maintain a transparent appearance when it is returned to room temperature.

The cleansing composition of the present invention is not limited to the above embodiments.

Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited to these examples. The blending amounts shown in Tables 1 to 4 represent mass% (effective content).

<Preparation of cleansing composition>
The cleansing compositions of Examples and Comparative Examples were prepared by the following procedure.

The components (A) to (C) and the component (G) were uniformly mixed at room temperature. A mixture of the components (D) to (F) uniformly at room temperature was added thereto, and the mixture was stirred for 10 minutes and mixed uniformly.

<Ingredients>
The following components were used as the components shown in Tables 1 to 4.
・ Ingredient (A)
(A1) PEG-8 glyceryl isostearate: M fine oil ISG-8M (made by Miyoshi Oil & Fat)
(A2) PEG-20 glyceryl isostearate: M fine oil ISG-20M (made by Miyoshi Oil & Fat)
・ Ingredient (B)
(Caprylic acid / capric acid) PEG-8 glyceriz: M fine oil MCG-8M (made by Miyoshi Oil & Fat)
(Caprylic acid / capric acid) PEG-6 glyceriz: Synthesized by a general method was used.
・ Ingredient (C)
2-Ethylhexyl palmitate: PALMESTER 1543 (manufactured by Palm Oleo)
Cetyl 2-ethylhexanoate: M Fine Oil EHC (made by Miyoshi Oil & Fat)
Liquid paraffin: Moresco White P-70 (manufactured by MORESCO)
Isododecane: Marcazole R (manufactured by Maruzen Petrochemical)
・ Ingredient (D)
Glycerin: Concentrated glycerin for cosmetics (made by Miyoshi Oil & Fat)
・ Ingredient (E)
1,3-butylene glycol (1,3-BG): manufactured by Daicel, component (G)
PEG-20 glyceryl triisostearate: M fine oil ISG-20T (made by Miyoshi Oil & Fat)
Palm oil fatty acid PEG-7 glyceryl: M Fine oil COG-7M (made by Miyoshi Oil & Fat)

<Evaluation method>
(1) Appearance After preparing the cleansing composition, it was placed in a transparent glass container and allowed to stand at 25 ° C. for one day, and then visually evaluated according to the following criteria. If the appearance of the composition is separated or cloudy, it does not have a bicontinuous structure, so further evaluation was not performed.
4: Colorless and transparent 3: Slightly fluorescent / bluish transparent 2: Fluorescent transparent 1: Separation / cloudiness

(2) Bi-continuous structure confirmation test FAT RED 5B02 (manufactured by Clariant Japan) was used as an oil-soluble dye. A 0.1% liquid paraffin solution of FAT RED 5B02 was used as an oil stain solution. Edible Blue No. 1 (manufactured by Beni Fuji Chemical Industry Co., Ltd.) was used as the water-soluble pigment. A 0.1% aqueous solution of edible blue No. 1 was used as an aqueous stain solution. About 0.03 g of each dye was added to about 3 g of the cleansing composition, and the mixture was shaken and stirred, and the infiltration of the dye was visually evaluated according to the following criteria.
bc (bi-continuous structure): After stirring with shaking, infiltration was observed in both the water-soluble dye and the oil-soluble dye, and it was judged to have a bi-continuous structure.
-(O / w or w / o emulsion): After shaking and stirring, infiltration of either a water-soluble dye or an oil-soluble dye was observed, and infiltration of the other was not observed, so it was judged to be an o / w or w / o emulsion. did.

(3) Detergency A polyethylene surgical tape (Keeppore, manufactured by Nichiban) was attached to the slide glass, about 0.01 g of lipstick was applied, and the mixture was dried at room temperature for 1 hour. After drying, it was immersed in each cleansing composition and allowed to stand for 1 hour. After standing, it was taken out from the cleansing composition, rubbed 20 times on the lipstick application part, rinsed with running water until the cleansing composition fell off, and the amount of lipstick remaining on the tape after rinsing was visually evaluated according to the following criteria. ..
4: Very well drops 3: Good drops 2: Slightly dirty remains 1: No drops at all

(4) Usability (moist feeling)
The panel 10 people took 1 g of the cleansing composition of the example on the back of the hand, spread it, and then rinsed it with running water until the cleansing composition was removed, and evaluated the moist feeling of the skin after the rinse.

The evaluation was made according to the following criteria according to the number of people who answered that they felt a strong moist feeling as compared with the case where the test of Comparative Example 6 was performed by the same operation.
〇: 7 or more of the 10 panels felt strong and moist △: 4 to 6 of the 10 panels felt strong and moist ×: 3 or less of the 10 panels felt strong and moist Feeling In the evaluation panel that evaluated the moist feeling, 20 sets of different moist feeling compositions were prepared, and 3 pieces were prepared for the 1-to-2 point test method (duo-trio test for 2 types of samples). A sample was presented, but one of the samples was presented as a standard sample, and the same sample as the standard sample was selected), and people with a correct answer rate of 70% or more were selected. In conducting the evaluation, discussions were held by the entire panel, and the characteristics of each evaluation item were adjusted so that each panel had a common understanding. In addition, in order to eliminate the bias of the panel in the sensory evaluation and improve the accuracy of the evaluation, the test plot number and contents of the sample were presented at random without notifying the panel.

(5) Stability at 50 ° C. The cleansing composition was placed in a transparent vial and stored in a constant temperature layer at 50 ° C. Samples were taken out weekly and the appearance was visually evaluated according to the following criteria.
6: 3 months or more, appearance more transparent 5: 2 months or more and less than 3 months, appearance more transparent 4: 1 month or more and less than 2 months, appearance more transparent 3: 2 Week or more and less than one month, appearance more transparent 2: 1 week or more and less than 2 weeks, appearance more transparent 1: Separation or cloudiness in less than 1 week

(6) Stability at -5 ° C The cleansing composition was placed in a transparent vial and stored in a constant temperature layer at -5 ° C. The sample was taken out every week, and the frozen sample was allowed to stand until it returned to room temperature, shaken and stirred, and the appearance was visually evaluated according to the following criteria.
6: 3 months or more, appearance more transparent 5: 2 months or more and less than 3 months, appearance more transparent 4: 1 month or more and less than 2 months, appearance more transparent 3: 2 Week or more and less than one month, appearance more transparent 2: 1 week or more and less than 2 weeks, appearance more transparent 1: Separation or cloudiness in less than 1 week

<Result>
The results are shown in Tables 1 to 5.

The cleansing compositions of Examples 1 to 50 are transparent in appearance (25 ° C.), have a bicontinuous structure (bc), have good detergency and moist feeling, and have a high temperature (50 ° C.). ) And low temperature (-5 ° C) for more than a week.

As in Comparative Examples 1, 2, 4, and 5, a composition containing no of the components (A), (B), (D), and (E) has a separated or cloudy appearance (25 ° C.). It was confirmed that it did not form a continuous structure. It was confirmed that the composition containing the component (G) without containing the component (A) as in Comparative Example 3 forms a bicontinuous structure, but the appearance is separated and cloudiness occurs under the condition of 50 ° C. Was done. A composition containing components (A) to (F) and having a component (D) of less than 20% by mass, as in Comparative Examples 6 and 7, is separated or clouded in appearance (25 ° C.) to form a bicontinuous structure. Or, even if a bi-continuous structure was formed, the moist feeling was insufficient. Further, in Comparative Example 8, a composition containing no component (B) and having a component (D) of less than 20% by mass forms a bicontinuous structure, but has sufficient detergency, moist feeling and high temperature stability. It was confirmed that it was not.

In Examples 1 to 12, the mass ratio of the component (C) to the total of the component (A) and the component (B) (component (C) / (component (A) + component (B)) is 0.3 or more. It was confirmed that Examples 1 to 11 were more excellent in detergency than Example 12.
In Examples 1 to 12 and 45, Examples 1, 2, 4 to 12 in which the component (A) is 18 to 26% by mass are more stable at high and low temperatures as compared with Examples 3 and 45. It was confirmed to be excellent.
In Examples 1, 2, 4 to 12, 46, 47, Examples 1, 2, 4 to 12 in which the component (B) is 4 to 18% by mass are stable at a low temperature as compared with Examples 46, 47. It was confirmed that the sex was excellent.

As shown in Table 3, Examples 13 to 22 containing polyoxyethylene glyceryl triisostearate and Examples 23 to 29 containing coconut oil fatty acid polyoxyethylene glyceryl as the component (G) are Examples. In comparison with 1 to 12, it was confirmed that the detergency and stability at high temperature were excellent, the appearance was more transparent at low temperature for 2 weeks or more, and the low temperature stability was also good.
In Examples 13 to 29, the mass ratio of the component (C) to the total of the component (A) and the component (B) (component (C) / (component (A) + component (B)) is 0.3 or more. It was confirmed that Examples 13 to 26, 28 and 29 were more excellent in detergency than Example 27.

As shown in Table 4, in Examples 30 to 42, 49, and 50, by using (a1) and (a2) in combination as the component (A), the stability at high temperature (50 ° C.) is excellent, and the temperature is further low. It was confirmed that the stability at (-5 ° C) was also excellent. Therefore, it is suitable because the appearance transparency of the cleansing composition can be maintained even in a high temperature and low temperature environment during storage and transportation.

Further, when the component (C) is a mixture of an ester oil and a hydrocarbon oil as in Examples 31 to 34, 36, 38, 40, 42, 49 and 50, the stability at high temperature and low temperature is further improved. It was confirmed that

Table 5 systematically shows the combinational composition of the components (A), (B), (G), and (C), and the component (G) is compounded, and the component (A) is referred to as (a1). It has been shown that when used in combination with (a2), detergency and stability at high and low temperatures are improved. Further, it has been shown that the combined use of the ester oil and the hydrocarbon oil as the component (C) improves the stability at high temperature and low temperature.

Claims (5)

A cleansing composition having a bicontinuous structure,
The following ingredients:
(A) Polyoxyethylene glyceryl isostearate;
(B) (Caprylic acid / capric acid) polyoxyethylene glyceriz;
(C) Liquid oil;
(D) Alcohol of trivalent or higher;
A cleansing composition containing (E) a dihydric alcohol; and (F) water, and having a content of the component (D) of 20% by mass or more. The component (A) is
(A1) Polyoxyethylene glyceryl isostearate having an addition molar number of 1 to 10 moles of ethylene oxide, and
(A2) The cleansing composition according to claim 1, wherein the number of moles of ethylene oxide added is at least one of 11 to 80 moles of polyoxyethylene glyceryl isostearate. The cleansing composition according to claim 1 or 2, wherein the component (C) is at least one of an ester oil and a hydrocarbon oil. The mass ratio of the component (C) to the total of the component (A) and the component (B) (component (C) / (component (A) + component (B)) is 0.1 to 0.8. , The cleansing composition according to any one of claims 1 to 3. The cleansing composition according to any one of claims 1 to 3, further comprising, as a component (G), trifatty acid polyoxyethylene glyceryl or coconut oil fatty acid polyoxyethylene glyceryl.